Add a 5 lb bag of custom roasted coffee to your parts order and get an extra 25% off our wholesale coffee prices!

Mazzer M28255/L

Mazzer M28255/L 4 X 4 X 22 Key | Fits Kold E & Kold S E

Regular price $7.81

This part ships directly from Mazzer and stock is not guaranteed. Lead time averaging 7 to 9 business days for ground shipments, 1 to 2 business days for Overnight.

If unavailable, the item will be backordered. If you have any questions check parts sheets below description. Please email or chat to confirm availability prior to ordering.

Description Details

Ensure the reliable transmission of power and prevent costly slippage in your Mazzer grinder with the genuine Mazzer 4 x 4 x 22 Key (Part \# M28255/L). This small but essential component, often referred to as a keyway key or machine key, is crucial for locking rotating elements, such as shafts, burr carriers, or transmission gears, firmly into place within your grinder’s mechanism. When your **Mazzer grinder is not spinning**, or if you notice inconsistent grinding, a worn or sheared key is often the culprit. Replacing it with this OEM part guarantees a precise fit, restoring the mechanical connection needed for flawless operation and consistent grind quality.

The Mazzer 4 x 4 x 22 Key is manufactured to original equipment specifications, ensuring maximum durability against the high torque loads encountered during daily commercial use. Its specific dimensions (4mm width, 4mm height, and 22mm length) ensure compatibility across various Mazzer models that utilize this standardized sizing for securing critical rotating components. Don't let a minor, inexpensive component cause major downtime; use this key to **fix Mazzer grinder motor problems** related to shaft slippage. Proper installation in the keyway channel ensures a tight fit, minimizing vibration and maximizing the lifespan of connected drive components.

Keep your high-volume café operating smoothly by investing in preventative maintenance. If you are experiencing **inconsistent grind dosing** or a sudden loss of motor engagement, the Mazzer M28255/L Key is the reliable solution. Stocking this genuine OEM replacement from Kaldi.com prevents unexpected service interruptions and maintains your machine’s efficiency. This key is an absolute must-have spare part for ensuring peak performance and protecting the major mechanical assemblies of your Mazzer grinder.

Descriptions are for reference only. We do our best to fill in the blanks when manufacturers don’t provide descriptions, but details can vary. We strongly recommend checking with the manufacturer for the exact part number you need. Ordering based on the part number—rather than the description—is the best way to ensure compatibility.

Frequently Asked Questions

This Part #M28255/L fits Mazzer machines, including the Kold E, Kold S E series. Compatibility may be specific to the machine's production year and model. Please consult the technical PDFs and compatibility data on this page to confirm a match for your specific unit before finalizing your purchase.

Our current database shows fitment for the Kold E, Kold S E series. However, many Mazzer components are interchangeable across different platforms. If you have successfully installed Part #M28255/L on a model we haven't listed, please let us know so we can update our records for the community.

If you are unsure of the fit, do not guess. To prevent downtime, please view our Compatible Parts Diagrams to check the exploded view PDF for your specific unit, or message our parts team for assistance.

Parts from Mazzer including this 4 x 4 x 22 key ship directly from their warehouse. Please email or chat to confirm availability prior to ordering.
Yes. Part #M28255/L is a 100% genuine OEM component sourced directly from the Mazzer factory. Using original parts ensures your equipment maintains its factory-spec pressure ratings and safety certifications.
Lead times for Mazzer parts typically range from 7 to 9 business days depending on availability. Next Day Air parts usually ship within 1 to 2 business days.
All Mazzer parts come with a 365-day manufacturer's warranty. Contact us for specific warranty details.
All Mazzer parts come with a All sales final return policy. Please see our refund policy or chat for more details.

Commercial Coffee Machine Part Manufacturers